Mix spice mixes separately and reserve. If using bone-in, cut from
rib bones. Place bones in roasting pan, they will act as a rack. Or
if using boneless, you will need to use a roasting rack.

Rub meat with the soy sauce. Rub the roasting
spice mixture into the meat to coat well. Place the rib eye on "rib
rack" or roasting rack and let marinate at least 1 hour. Meat can
chill overnight if desired, wrap in plastic.

Place in a preheated 500 F oven and cook uncovered for 15 minutes.
Pour the water in the bottom of the pan to produce moist heat. Turn
oven down to 300 degrees and roast for 1 hour and 10 minutes.

Remove from oven and cool 30 minutes, then wrap
in plastic and chill overnight or up to 3 days. Prime rib will be
rare at this point.